Preheat the oven to 350 F. Lightly grease the mini-loaves wells with non-stick cooking spray.
In a stand mixer or large mixing bowl, cream together the butter and sugar. Then mix in the eggs, mashed bananas, milk and vanilla. Blend until smooth.
Carefully add the flour, baking soda, salt and cinnamon to the wet ingredients. Blend until batter forms.
Evenly divide and pour into the mini-loaves pan and bake in the preheated oven for 25 to 28 minutes, or until cooked through in the center.
Let cool slightly before eating.
Keep in sealed container or baggie for up to 2 days on the counter, 5 days in the fridge, or 3 months in the freezer.
Serve Banana Bread Mini-Loaves in lunch boxes, or for snacks.